DE3802651A1 - Medical forceps, in particular arthroscopy forceps - Google Patents

Abstract

The invention relates to a medical forceps, in particular arthroscopy forceps, in which the forceps shaft is tubular and carries at least one articulated bit member at the end near the patient. The bit member can be actuated by pressure or tension by means of a rod inside a forceps shaft and the rod is in articulated connection with a movable handle part on the end remote from the patient, the forceps shaft being rigidly connected to a fixed handle part. In order to improve this forceps in such a way that the forceps handle can be used for a wide variety of purposes it is proposed by the invention that an articulated adapter piece be arranged between the movable handle part and the rod, the adapter piece reversing the direction of operation of the rod. In order to increase the manual force considerably, if and when required, it is provided, inter alia, that the movable handle part be provided with a slot which is eccentric relative to the fixed axis for receiving a pin of the articulated adapter piece, this eccentric slot having an outward curve for reinforcement of the manual force.

Description

The invention relates to medical pliers according to the preamble of claim 1.

It is a surgical forceps, for example for clamping arteries known, in which the movable handle part hinge-like with the fixed standing grip part is connected. In a recess of the movable Pliers leg is an axis for articulated connection with the loading Actuation rod available (DE-OS 32 15 949).

The pliers handles of these known pliers differ from techni other reasons, for example for Arthroscopic forceps. The arrangement of the pliers handles is also below different, so that the doctor or surgeon adhere to the different unit had to get used to the embodiments.

The invention has for its object to a medical forceps create whose pliers handles used for a variety of purposes bar are designed uniformly. This should also be the possibility stand, to increase the hand strength significantly if necessary.  

To solve this problem, the characteristic features of the An Proposition 1 provided.

If in another type of medical forceps the actuating direction must be reversed, the articulated intermediate piece 5 can simply be omitted, and the rod 3 is then coupled directly to the handle part 2 in a conventional manner, so that the forceps in the rest can remain the same.

This not only simplifies the doctor's case does not have to get used to other pliers, but it also becomes Manufacturing significantly simplified.

A further advantage arises from the invention in that the manual force can be increased considerably as a result of the intermediate piece. This means that an intermediate lever is installed, which can be dimensioned accordingly. According to claims 2 and 3, an eccentric elongated hole 16 with an outward curve 17 can also serve to increase the hand force.

Finally, the feature of claim 5 is also suitable, the manual force additionally reinforce.  

Further advantages and details of the invention result from the Now the following description of an embodiment with reference on the drawing. In this shows

Fig. 1 is a partially sectioned side view of the execution form and

FIG. 2 is a greatly enlarged view like FIG. 1 of part of the pliers according to FIG. 1.

The medical forceps according to FIG. 1 shows the fixed handle part 1 , partially cut in the upper region, to which the tubular forceps shaft 12 is connected on the left. The tube 12 is firmly connected to the handle part 1 . Further left you can see the upper movable jaw part 10 and the lower fixed jaw part 11 , which can be integrally formed with the tubular pliers shaft 12 . The mouth part 10 is actuated in a known manner by the rod 3 when it moves in the direction of arrow 14 .

This is done in that the movable handle part 2 is moved in the direction of arrow 9 around the fixed axis pin 8 , whereby the pin 15 of the articulated intermediate piece 5 is moved around the axis pin 7 fixed with the fixed handle part 1 in the direction of arrow 4 . The rod is connected to the intermediate piece 5 by the articulated connection 6 .

The movable handle part 2 also shows an attachment 13 at the bottom, on which an additional finger of the doctor or surgeon can engage and thus increase the hand force.

Fig. 2 shows schematically the operative connection of the pliers in detail, with the fixed handle part 1 omitted for clarity and the handle part 2 and the rod 3 are only partially shown.

The movable handle part 2 is again rotatable about the fixed axle pin 8 , which is arranged in the fixed handle part 1, not shown, according to FIG. 1. If now the rotation in the direction of arrow 9 takes place, the pin 15 of the articulated intermediate piece 5 is pressed down in Fig. 2, whereby the intermediate piece 5 is rotated clockwise around the fixed axis pin 7 , so that the rod 2 in Direction of arrow 14 is pulled through the hinge 6 to the right.

The further actuation of the jaw parts or at least one movable jaw part 10 has already been mentioned and need not be explained in more detail to who, since this is known. It can also be arranged both jaw parts 10, 11 movable in a known manner.

The hand strength can be increased by appropriate dimensioning of the lever arms. For this purpose, the lever arm a between the fixed axle pin 8 and the pin 15 movable with the intermediate piece 4 can be small, while the lever arm b between the pin 15 and the fixed axle pin 7 should then be relatively large. The lever arm c between the fixed pin 7 and the hinge pin 6 should then be relatively small again so that an additional translation takes place here.

In addition, the hand force can also be increased by the curve 17 of the elongated hole 16 , which is shaped with respect to the elongated hole 16 to the outside.

If the direction of movement of the rod 3 is now to be reversed in another type of medical forceps, the articulated intermediate piece 5 is simply omitted, for example expanded. Then the rod is movably connected to the pin 18 of the movable handle part 2 , whereby pliers of conventional design are present, but without the handle parts 1, 2 having to be replaced at all.

This naturally also results in a considerable simplification of production, since the same handle parts 1, 2 and also all other parts can only be used with the exception of the articulated intermediate piece 5 with a completely different type of forceps, which is used, for example, to clamp arteries.

The invention is not based on the illustrated embodiment limits. Rather, the expert is able, within the framework of the An say to create other embodiments.

Claims (4)

1. Medical forceps, in particular arhroscopic forceps, in which the forceps shaft is tubular and carries at least one gel kiges forceps jaw part at the end near the patient, which can be actuated by means of a rod in the interior of the forceps shaft by pressure or pull, which with a movable handle part on the patient Far end is in an articulated connection, the pliers shaft being rigidly connected to a fixed handle part, characterized in that an articulated intermediate piece ( 5 ) is arranged between the movable handle part ( 2 ) and the rod ( 3 ), through which the actuating direction ( 14 ) of the rod is reversed. 2. Medical forceps according to claim 1, characterized in that the movable handle part ( 2 ) for receiving a pin ( 15 ) of the gel kigen intermediate piece ( 5 ) with an opposite to the fixed axis ( 8 ) eccentric slot ( 16 ) is provided. 3. Medical forceps according to claim 2, characterized in that the eccentric slot ( 16 ) has an outward curve ( 17 ) for increasing the hand force. 4. Medical forceps according to claim 1, characterized in that the movable handle part ( 2 ) has an additional eccentric pin ( 18 ) which is used for direct articulated connection with the rod ( 3 ) if necessary without the articulated intermediate piece ( 5 ).